Are Elder Scrolls and Dark Souls connected?

Are Elder Scrolls and Dark Souls connected? (possible very minor spoilers) I was playing Skyrim and got to the point in the Dawnguard storyline where you enter the soul cairn. If you talk to Serana after you get inside there are several dialogue options that give you more information about the place.

(possible very minor spoilers) I was playing Skyrim and got to the point in the Dawnguard storyline where you enter the soul cairn. If you talk to Serana after you get inside there are several dialogue options that give you more information about the place.
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